Method of making closure plugs,申请号US19440534261-传众专利搜索

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发明名称	Method of making closure plugs
摘要
申请公布号	US2492176(A)	申请公布日期	1949.12.27
申请号	US19440534261	申请日期	1944.05.05
申请人	AMERICAN FLANGE & MANUFACTURING CO., INC.	发明人	O'CONNOR WALTER J.
分类号	B21D51/38;B65D39/08	主分类号	B21D51/38
代理机构		代理人
主权项
地址

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